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monster cookies
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5 from 1 vote

Monster Cookies

Monster Cookies consist of peanut butter, oats, chocolate chips, and M&M, all held together with the chewiest, softest cookie dough around! These are hands down the best Monster Cookies ever!
Course Dessert
Keyword monster cookies
Prep Time 25 minutes
Calories 3588kcal
Author Karli Bitner


  • 1/2 cup salted butter
  • 1/4 cup peanut butter
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar
  • 2 eggs
  • 2 tsp vanilla
  • 1 1/2 cup all purpose flour
  • 1 cup old fashioned oats
  • 1 tsp salt
  • 1 tsp baking soda
  • 1/2 cup mini chocolate chips
  • 1/2 cup mini M&M's


  • Preheat oven to 350°.
  • Cream together butter, peanut butter and sugars until light and fluffy with either a stand mixer or electric hand mixer.
  • Add in the eggs and vanilla, mix until just combined.
  • Add in the flour, old fashioned oats, salt and baking soda. Mix until the cookie dough forms. Dough will be slightly sticky.
  • Fold in the mini chocolate chips and mini m&m's.
  • Scoop into large balls (approx 3 tbsp worth of dough), arrange on an ungreased cookie sheet and bake at 350° for 9-11 minutes, taking them out when they are barely starting to turn golden brown.
  • Allow the cookies to cool on the pan for 5 minutes before transferring to a wire cooling rack.


You can add extra M&M's and chocolate chips on top of the cookie dough prior to baking if desired. 


Calories: 3588kcal | Carbohydrates: 482g | Protein: 63g | Fat: 161g | Saturated Fat: 82g | Cholesterol: 585mg | Sodium: 4754mg | Potassium: 1180mg | Fiber: 20g | Sugar: 271g | Vitamin A: 3513IU | Calcium: 370mg | Iron: 17mg